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所谓增压就是增加燃烧以前发动机气缸中的充量重量,以提高输出功率和改善发动机性能。在自然吸气式发动机上,混合气依靠进气冲程中活塞下行产生的真空吸进气缸,进气冲程末,气缸中的充量密度通常小于大气密度。采用增压时,混合气是在压力下进入气缸的,所以增加了充量密度,燃烧压力及输出功率都提高了。 1940年以前,就已经在汽车上采用了增压发动机。最初成批生产的装有增压器的发动机
The so-called booster is to increase the amount of charge in the engine cylinder before combustion to increase output power and improve engine performance. In a naturally aspirated engine, the mixture relies on the vacuum generated by the piston descending into the intake stroke into the cylinder. At the end of the intake stroke, the charge density in the cylinder is usually less than the atmospheric density. The use of pressurized, the mixture is under pressure into the cylinder, so increase the density of the charge, the combustion pressure and output power are increased. Before 1940, already in the car with a supercharged engine. Turbocharged engine initially in mass production